Blackspire 24- Teeth 58 Bicycle Chainrings
Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.
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Blackspire Super Pro 9/10sp Chainring, 58mm x 24T, Black 
Info
CNC'd 7075 T-6 The ENGINEERED ring! Modified shift gates and special profiles to allow 9 and 10 speed chains to shift flawlessly … read more
Blackspire 190
Ships Freeyour price $30.52 + ships free
Info Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.
Chainring Teeth
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